JP2851958B2 - Electromagnetic cooker - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnetic cooker for cooking, for example, cooking rice and keeping heat by induction heating.

[0002]

2. Description of the Related Art At present, an electromagnetic cooker is used in a large proportion in ordinary households. The general structure of this electromagnetic cooker is as shown in FIG. In FIG. 1, an inner pot 1 for holding a cooked product, for example, rice, is removably stored in a cooker body 6. The inner pot 1 is U-shaped as shown, and its outer peripheral surface is made of a stainless steel plate so that it can be induction-heated by a heating coil described later.
The inner peripheral surface thereof is made of a two-layer clad material of an aluminum plate having good heat conductivity, and the inner surface of the aluminum plate is subjected to a fluorine resin processing so that cooked products do not stick. The cooking device main body 6 has a storage portion for the inner pot 1, and the storage portion includes a protection frame bottom portion 2 formed of a non-metallic material such as resin, and a protection frame side portion formed of a metal material. 3. A shoulder reinforcing member 7 made of a non-metallic material on which the brim portion 5 of the inner pot 1 is placed in contact with the protective frame side surface portion 3, and for connecting the storage portion to the cooking device main body 6. It is constituted by an outer shuttle 20 formed by a shoulder member 4 formed of a nonmetallic material. A heating coil 8 is arranged on the protection frame bottom 2, and a side heater 9 is arranged on the protection frame side 3. At the bottom of the cooker body 6, a control unit 10 for controlling rice cooking and heat retention is provided.

[0003] A sensor 11 provided so as to be in contact with the inner pot 1 is for detecting the temperature of a cooked product. The cooker main body 6 is configured to be openably and closably covered by the lid 12. The lid 12 has a steam vent hole 1 for releasing steam from the inner pot 1 to the outside when the lid is closed.
3 are provided. The lid 12 has an inner lid 14.
The inner lid 14 is configured such that when the lid 12 is closed, the outer peripheral portion thereof is pressed against the flange 5 of the inner pot 1. In the figure, 15 is a packing for preventing steam leakage, 19 is a heat insulating material for the lid 12, and 16 is a lid heater provided on the lid 12. When cooking rice,
The bottom and side portions of the inner pot 1 are mainly heated by the bottom heating coil 8 installed on the protection frame bottom portion 2 and the side heater 9 of the protection frame side portion 3. The entire surface of the inner pot 1 is heated by a side heater 9 disposed on the side of the apparatus 3 and a bottom heating coil 8. Since the protection frame side surface portion 3 provided with the side surface heater 9 is required to have heat conductivity and heat resistance, it is made of a material having good heat conductivity such as an aluminum plate. Further, the shoulder reinforcing member 7 with which the protection frame side surface portion 3 comes into contact is required to be formed of a nonmetallic material having better heat resistance than the shoulder member 4, and is therefore a separate part. In the figure, reference numeral 18 denotes a heat insulating material of the cooking device main body 6, and reference numeral 17 denotes a pressing plate of the bottom heating coil 8.

[0004]

However, in such a conventional electromagnetic cooker, the shoulder member 4, the shoulder reinforcing member 7, the protective frame side portion 3, and the protective frame that constitute the outer pot 20 described above. Since parts such as the bottom part 2 are attached by joining, there is a problem in electric insulation such as penetration of water. Further, since the outer hook 20 is formed by such joining, the structure is very complicated, and the cost naturally increases. Furthermore, at the time of cooking rice, heating of the inner pot 1 is performed indirectly from the protective frame side portion 3 heated by the side heater 9 due to its structure.
There is a limit to the heating of the cooked product, which causes uneven temperature in the inner pot 1. For example, the bottom of the inner pot 1 is
However, since this portion is heated earlier than the side portion of the inner pot 1 heated by the side heater 9, uneven cooking may occur. Further, at the time of heat retention, even if an attempt is made to heat the inner lid 14 by using the heat of the side heater 9, the heating is performed indirectly from the protection frame side portion 3 because of the structure, so that the desired heat retention can be achieved. It cannot be performed, and eventually the lid heater 16 is provided or the inner lid 14 and the protection frame side 3
It is necessary to have a structure that makes direct contact with the structure, which is structurally complicated. The present invention has been made in order to solve the above-mentioned various problems in the related art, and has a relatively simple structure, and has excellent electric insulation, rice cooking, and heat retention. The purpose is to provide.

[0005]

According to a first aspect of the present invention , there is provided a cooker body, an outer cooker provided inside the cooker main body, and an inner pot detachably mounted in the outer cooker. Kettle and the key
A lid for opening and closing the main body of the instrument, and attaching to the lid
An inner lid and an inner pot are disposed at the bottom of the outer periphery of the outer pot, and
And a bottom heating coil for induction heating from the side of the outer pot.
Side heating coil for induction heating the inner pot from the side
And an electromagnetic cooker comprising:
A side upper heating means to be disposed, and an outer peripheral portion of the inner lid,
The heated portion which is in contact with and heated by the upper side heating means
Ru electromagnetic cooker der, characterized in that it comprises and.

[0006] The second aspect of the present invention is the above-mentioned side upper part.
The heating means comprises an induction heating coil.
Ru electromagnetic cooker der of claim 1, wherein that.

[0007]

[Action] Bottom heating coil for induction heating of the inner pot at the bottom of the outer pot
The side heating coil for induction heating the inner pot on the side of the outer pot
, Respectively, so the bottom and side of the inner pot are
Directly heated by induction heating by each heating coil
Each part of the inner pot is heated evenly,
Does not occur. In addition, the outer periphery of the inner lid is
Heated part heated by the arranged side upper heating means
(Inner pot brim) and heated by heat conduction
Temperature of the inner pot and the outer periphery of the inner lid
The temperature distribution in the inner pot can be
It becomes uniform, and it becomes possible to perform appropriate heat retention.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 are views showing a specific configuration of the electromagnetic cooker according to the present invention. The same members as those in FIG. 3 are denoted by the same reference numerals, and their functions and the like will be described only schematically in order to avoid redundant description. The inner pot 1 for holding rice is removably stored in the main body 6 of the cooker.
The cooking device main body 6 has a storage portion for the inner pot 1, and the storage portion is provided with a shoulder reinforcement on which the protection frame bottom 2, the protection frame side 3, and the collar 5 of the inner pot 1 are placed. It comprises an outer pot 20 formed of a material 7 and a shoulder member 4 for connecting the storage section to the cooking device main body 6. Each part constituting the outer hook 20 is integrally formed of a non-metallic material in consideration of improvement in electric insulation. A bottom heating coil 8 is disposed on the bottom portion 2 of the protective frame of the outer hook 20, a side heating coil 9 a is disposed on the side portion 3 of the protective frame, and an upper side heating coil 23 is disposed on the upper side 22 of the protective frame. The inner pot 1 is U-shaped as shown, and its outer peripheral surface is formed of a stainless steel plate so that it can be induction-heated by the respective heating coils 8, 9a, 23, and its inner peripheral surface has good heat conductivity. It is made of a two-layer clad material made of a transparent aluminum plate, and the inner surface of the aluminum plate is subjected to a fluorine resin processing so that cooked products do not stick. A control unit 10 for controlling rice cooking and heat retention is provided on a side portion of the cooker main body 6.

A sensor 11 provided so as to be in contact with the inner pot 1 is for detecting the temperature of the cooked food. The cooker main body 6 is configured to be openably and closably covered by the lid 12. The lid 12 has a steam vent hole 1 for releasing steam from the inner pot 1 to the outside when the lid is closed.
3 are provided. The lid 12 has an inner lid 14.
The inner lid 14 is detachably provided on the lid 12, and when the lid 12 is closed, its outer peripheral portion is pressed against the flange 5 of the inner hook 1. If the inner lid 14 is formed of a metal material having an appropriate resistivity so as to be inductively heated to an appropriate temperature by the upper side heating coil 23, the heating at the time of heat retention is performed by a lid heater as shown in FIG. This is possible even without providing the 16 specifically, that is, with a simple configuration as shown in FIG. However, when formed of a material generally used conventionally, it is necessary to keep the temperature by the lid heater 16 as shown in FIG. In addition, even when cooking rice, if the inner lid 14 is appropriately heated, the rice can be cooked more uniformly, that is, without cooking. In the drawing, reference numeral 15 denotes a packing for preventing steam leakage, 19 denotes a heat insulating material of the lid 12, 18 denotes a heat insulating material of the cooking device main body 6, and 17 denotes a pressing plate of the heating coil.

In the cooker constructed as described above, when cooking rice, the bottom heating coil 8 installed on the protection frame bottom 2, the side heating coil 9 a installed on the protection frame side 3, and the protection frame are mainly used. The bottom and the side surface of the inner pot 1 and the inner lid 14 are each induction-heated by the upper side heating coil 23 installed on the upper side portion 22, and the rice is cooked by the heat. The capacities of these coils are determined so that the degree of induction heating of the bottom of the inner pot 1 by the bottom heating coil 8 and the degree of induction heating of the side of the inner pot 1 by the side heating coil 9a are the same. ing. Such a configuration makes it possible to minimize uneven cooking. At the time of heat retention, the lid 12
The entire surface of the inner pot 1 is guided by the lid heating heater 16 provided on the side of the protective frame and the side surface heating coil 9a disposed on the side surface of the protective frame side portion 3 and the bottom heating coil 8 disposed on the protective frame bottom portion 2. It will be heated.

As shown in FIG. 2, the inner lid 14 attached to the lid 12 is
(Except for the lid heater 16), the upper side heating coil provided on the protective frame side surface upper portion 22 is made of a metal material having an appropriate resistivity so as to be induction-heated to an appropriate temperature by the heater. 23, the entire surface of the inner pot 1 is heated by the side heating coil 9a arranged on the side surface of the protection frame side portion 3 and the bottom heating coil 8 installed on the protection frame bottom portion 2. In addition, shoulder member 4, shoulder reinforcement 7,
Since the protective frame side 3 having the side heating coil 9 and the side upper heating coil 23 and the protective frame bottom 2 having the bottom heating coil 8 are induction-heated, their thermal conductivity and heat resistance are not so important. Therefore, it is possible to form the outer pot 20 in which all of these are integrally formed of a nonmetallic material. When the inner lid 14 is formed of a metal material that is induction-heated by the upper side heating coil 23, the lid 12 has no electrical components. 13 can be removed and it can be washed whole.

[0012]

As is apparent from the above description , according to the first aspect of the present invention , the bottom of the outer hook and the outer peripheral portion of the outer hook are provided.
A heating coil for induction heating the inner pot is provided for each.
The inner pot is used for induction heating by each heating coil.
Therefore, it was directly heated and distributed at the above positions
Each part of the inner pot is heated evenly and efficiently by the heating coil.
It is heated, and the outer periphery of the inner lid is
A heated portion heated by the upper side heating means provided
Heated by heat conduction due to surface contact, so low temperature
Raise the temperature of the inner pot and the outer periphery of the inner lid that are easy to drop
Can be combined with the heating of the inner pot by each heating coil.
The temperature distribution in the inner pot to make it even and
Can be cooked, and uneven cooking does not occur.
You. Since the lid has no electrical components, the structure is simplified and the whole can be washed. In addition,
According to claim 2, the heated portion can be heated by the induction heating coil.
Therefore, the material of the inner lid should be
Metals with suitable resistivity to be induction heated to temperature
Even if it is not formed of material, heat conduction from the heated part
The inner lid can be heated.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a first configuration of an electromagnetic cooker according to the present invention.

FIG. 2 is an explanatory view of a second configuration of the electromagnetic cooker according to the present invention.

FIG. 3 is a view showing the structure of a conventional electromagnetic cooker.

[Description of Signs] 1: Inner pot 2: Protective frame bottom 3: Protective frame side 4: Shoulder member 5: Inner pot brim 6: Cooker body 7: Shoulder member reinforcement 8: Bottom heating coil 9a: Side Heating coil 10: Control unit 11: Sensor 12: Lid 13: Vapor vent hole 14: Inner lid 15: Packing 16: Lid heater 17: Heating coil presser plate 18, 19: Heat insulating material 20: Outer pot 22: Protection frame Upper side 23: Upper heating coil 24: Hinge for attaching / detaching the lid

Claims (2)

(57) [Claims] 1. A cooker main body, an outer pot provided inside the cooker main body , an inner pot detachable in the outer pot, and the cooker main body
A lid body that can be opened and closed, and an inner lid attached to the lid body,
It is arranged at the bottom of the outer periphery of the outer hook and guides the inner hook from the bottom.
A bottom heating coil to be heated;
And a side heating coil for induction heating the shuttle from the side.
In the electromagnetic cooker, the upper side heating means disposed on the upper side of the outer pot, and the upper side heating means disposed directly above the upper side heating means,
It comes into surface contact with the outer periphery and is heated by the upper side heating means.
Induction cooker, wherein Rukoto a heated portion to be heated. 2. The heating device according to claim 1, wherein the upper side heating means is an induction heating coil.
The electromagnetic cooker according to claim 1, wherein the electromagnetic cooker comprises: